A Recurrent Temporal Model for Semantic Levels Categorization Based on Human Visual System

Figure 2

Psychophysics categorization task. A fixation point is illustrated for 1000 ms to focus on the subject. After that the categorization label is onset for 800–1200 ms. Next, a gray 256 × 256 image named stimulus is flashed for 250 ms for long ISI and 25 ms for short ISI, respectively, followed by a noise mask for 100 ms. At the end of the experiment, the subjects are asked to respond whether the presented image matched with the shown label or not, using “Yes” or “No” keys on a keyboard.